Sawako Yamanaka

Height: 165 cm Sawako is the adviser for the wind instrument club at Yui's school. An alumna of the school and a former member of the light music club, she does not want people to know she was formerly a member of a heavy metal band, thus she covers up by being mild and gentle to her co-workers and especially to students. She is forced to be the adviser of the light music club, as Ritsu blackmails her after the girls learn of her past, though it is unknown whether she stopped being the adviser for the wind instru…